Bolding Greek letters in R

Question

I want to add a greek letter to my the margin of a figure, and I used the line of code below:

mtext(side=2,line=6,text=expression(paste(beta,\"-Actin Normalize         


        

Answer 1

You can use the bold plotmath function:

expression(bold(paste(beta,"-Actin Normalized")))

And before you ask for bold(beta) you should read this information from Prof Ripley on Rhelp